body{

}

/*页头和导航*/
#header {
    width: 100%;
    position: fixed;
    z-index: 999;
}

.breadcrumb {
    background-color: white;
    overflow: hidden;
}

#header span {
    position: relative;
    left: 1000px;
    top: -63px;
}

button {
    position: fixed;
    top: 5px;
    left: 1380px;
    overflow: hidden;
}

/*侧边栏*/

div[class="jumbotron"]{

    margin: 0 auto;
}



/*页尾*/
footer {
    width: 100%;
    height: 100%;

}

footer div:nth-child(1) {;
    padding-top: 10px;
    width: 100%;
    height: 80px;
    background-color: black;
    color: #642D64;
    text-align: left;
}
footer  div img[name="scan"]{
    float: right;
    position: relative;
    left: -150px;
    margin-top: -38px;
    margin-left: 30px;
}


.card{
    position: relative;
    float: left;
}